CNC Controler Software

Hello All,

I've got a question. I'm currently investigating which controller
software to use. Right now I've been trying out TurboCNC. So far I
like it just fine. However, I've noticed some software, like
FlashCut, requires a 'Signal Generator'. Why would someone need a
signal generator? I know it generates step and direction signals,
but can't the software do this also. I've read that the signal
generators offer true real-time signals, but again, what's the
benifit of that. What really got me going was the price tag for
FlashCut. I can see that the software is loaded with features, and
has a very nice interface, but is the signal generator what really
bring so much to the table? (i.e. $1095 price tag!)

Thanks,
Archie